(1) It was observed in the reaction of organic chloride with silver nitrate that the irregular catalytic action can be avoided by carrying experiments in a dark room. (2) Silver nitrate was interacted with several organic chlorides which were highly reactive in SN2 type reaction and the kinetic data obtained were fully discussed. (3) Some organic polychlorides were reacted with silver nitrate and with potassium iodide and rates obtained in these reactions were discussed.